Assessment of Friction Factor in Open Channel Flow With Bedload Movement

Abstract

The friction factor is observed to depend on hydraulic and geometric parameters such as relative depth, hydraulic radius, bed shear velocity, u * , water density, ρ, Froude number, F, average vertical velocity, u, Reynolds number, R and relative roughness, K. In this paper, Different parameter like width(m), Slope(m/m), Discharge(m3 /s), Mean flow velocity (m/s), Depth of flow (m), Hydraulic radius (m), Diameter of particle(D50) has used of a various researcher to make calculation of Relative depth(R/D50), ratio of depth of flow to the width of channel, Froude number(Fr), Shear velocity(u*), Reynold’s number(Re), Roughness reynold’s number(Re*), and friction factor under bed load condition using model of various researcher.In open channel variation of friction factor with a various factor which affects the open channel flow has studied for different data set of various researcher also a variation of friction factor of different researcher for different data set has studied. An error has found out for a different model and comparision has been done for various model of a friciton factor.